We're in a new home and spent quite a bit on landscaping.

Our backyard faces south and is in full shade. We wanted to block a large shed in the back and the landscaper suggested everygreens-Norway Spruce and White Pine. We did not know that evergreens required sun and the Spruces are dying but the pines are doing OK. I'm afraid of replacing the spruces with pines as I thought that pines required sun as well

We need a screen of at least 15 ft in order to block the shed-preferably year round. Will Canadian Hemlock thrive in full shade?

Are landscaper suggested the following choices:

Some possible options that can be used in the back border would be

Witchhazel, Blackhaw Viburnum, Serviceberry and Cornelian Cherry Dogwood.

The plants all grow to around 10-12' at maturity and are multi-stem.

I look forward to your comments and suggestions.